The X-chromosome linked colour blindness affects the ability to detect

The X-chromosome linked colour blindness affects the ability to detect the difference between which of the following lights ?

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Green light and red light

Yellow light and blue light

Blue light and violet light

Yellow light and red light

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This question was previously asked in

UPSC CISF-AC-EXE – 2018

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X-chromosome linked colour blindness is most commonly red-green colour blindness. This condition affects the photoreceptor cells in the eye (cones) that are sensitive to red and green light, making it difficult to distinguish between these colours.

X-linked colour blindness primarily impairs the ability to distinguish between red and green colours.

Colour blindness is often inherited and is much more prevalent in males because the genes responsible for the most common forms are located on the X chromosome. Females have two X chromosomes, so a functional gene on one X chromosome can often compensate for a non-functional one on the other, whereas males only have one X chromosome.

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